DTCS P0113: IAT Sensor Input High
NOTE:
After each repair, clear DTCs. See CLEARING CODES/PCM RESET PROCEDURE
under SELF-DIAGNOSTIC SYSTEM. Turn ignition off and then on. Read DTCs to verify repair is complete. For DLC and PCM connector terminal identification, see CONNECTOR IDENTIFICATION
. For wiring diagrams, see WIRING DIAGRAMS
.
- Using scan tool, read DTCs. If DTC P0113 is present, go to next step. If DTC P1113 is not present, problem may be intermittent. See the following:
- For 1995 models, see INTERMITTENTS in TESTS W/O CODES article.
- For 1996 models, see INTERMITTENTS in TESTS W/O CODES article.
- For 1997 XJR models, see INTERMITTENTS in TESTS W/O CODES article.
- For 1997 XJ6 models, see INTERMITTENTS in TESTS W/O CODES article.
- Using scan tool, monitor IAT TEMP RANGE. Using a thermometer, check ambient temperature at IAT sensor. If scan tool reading and thermometer reading do agree, go to step 6 . If readings do not agree, go to next step.
- Check air intake system for restrictions or damage. Repair air intake system as necessary. If air intake system is okay, turn ignition off and go to next step.
- Disconnect IAT sensor connector. Using DVOM, check continuity of Blue/Black and Black/Green wires between IAT sensor connector and PCM connector. Repair wiring as necessary. If wiring is okay, go to next step.
- Check if Blue/Black and Black/Green wires are shorted together. Repair wiring as necessary. If wiring is okay, go to next step.
- Check resistance across IAT sensor terminals. Ensure resistance increases as temperature rises. If sensor does not test as specified, replace IAT sensor. If sensor tests as specified, go to next step.
- Substitute a known-good IAT sensor. Clear DTCs. Turn ignition off and then on. Read DTCs. If DTC P0113 is not present, replace original IAT sensor. If DTC P01113 is present, replace PCM.